Fountain pen



' L. TADDEO July 17, 1923.

FOUNTAIN PEN Filed July 20, 1921 //vv yra/?.' Lil/GI 720050 fir a w W ArroRA/a' Patented July 17, 1923.

LUIGI TADDEO, F CLEVELAND, OHIO.

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FOUNTAIN PEN.

Application filed July 20, 1921. Serial No. 486,083.

principle of the invention being herein ex plained and the best mode in which I have contemplated applying that principle, so as to distingmshit from'other inventions.

My invention relates to improvements in fountain pens. relates to a new and improvedconstruction '15 of the plunger utilized for the filling or emptying of the pen. The invention further relates to new and improved means forming a closure or cap for the outer end of theink reservoir. The invention is an tain pens shown, described and claimed in my U. S. Letters Patent Nos.1, l09,616 and The annexed drawing and the following description set forth in detail certain means embodying my invention, the disclosed means, however, constituting but one of the various forms in which the principle of the invention may be employed.

In said annexed drawing:

Figure 1 represents a partial elevation and a partial longitudinal section of my improved fountain pen, showing the ink reservoir of the same empty, the parts of the pen being in those relative positionswhich they occupy just previously to filling the Figure 2 is a View similar to Figure 1, showing the parts in the positions which they occupy just after filling the pen;

Figure 3 is a view similar to Figures 1 and 2, showing the pen parts in those relative positions which they occupy when the pen is filled and ready for use;

Figure 4 is a view of a fragmentary part of Figure 1, upon an enlarged scale;

Figures 5 and 6 represent, respectively, top and bottom plan views of the elements shown in Figure 4;

Figure 7 is a view of fragmentary parts of Figure 3, upon an enlarged scale;

Figure 8 is a plan view, upon an enlarged scale, of a brass stamping, forming part of my new and improved plunger, the same be ing shown in this figureas it appears before Particularly, the invention improvement in the construction of foun it, is formed into the shape which it occupies in the completed plunger;

Figure 9 is a side elevation ofthe element shown in Figure 8; and a Figure 10 is a side elevation of said brass stamping, showing the same in the .form

which it assumes in the completed plunger,

the plunger body being suggested in dot and dash outline. Referring to the annexed. drawing in which the several parts are indicatedby the same ordinals, respectively, "in. the several views, an ink barrel. or reservoir of a fountain pen isindica'ted by the ordinal 1, the same being secured in any suitable manner to the neck portion 2 of the pen in which the pen proper-2' is secured. The barrel 1 is formed with anink chamber 3 adapted to be filled by ink 4 drawn in through the neck portion 2 by suction, as is well understood. This suction is created by the operation of a plunger 8 having a plunger rod 5, formed with an outer enlarged operating and cap portion 6, and an inner enlarged head portion 7. By means of a partitionwall 10 the barrel 1 is subdividedintol two chambers 3 and 9, the partition 10 being formed with an enlarged hole 10 forming a guide for the reciprocations of plunger rod 5. The outer end of the barrel 1 is formed with an internally screw threaded portion 9' adapted to cooperate with an externally screw threaded portion 6 formed upon the cap or closure 6.

The inner head 7 of the plunger rod 5 is formed with an externally screw threaded portion 7 adapted to co-operate with an internal thread 13 formed in the body 11 of a brass stamping. hereinafter more fully described, having a plurality of arms 12 as. plainly shown in Figure 8. By reason of the provision of the enlarged hole 10', the plunger rod 5 does not bind when reciprocated and a certain lateral adjustment is allowed to the compressible plunger 8. Also, by the provision of an internally-threaded outer end 9' and the cooperating externallythreaded closure 6 I effectively seal the open end of the ink reservoir to a degree which is not possible when the plunger rod intersects an externally-threaded outer end portion of the ink reservoir which cooperates with an internally-threaded closure member.

1 The brass stamping 1 1 is stamped out in the form shown in Figure 8, drilled and tapped to form the threaded hole 13 and then the arms 12 are bent into parallel positions substantially at right angles to the plane of the body portion 11. This multipleprong nail member is then driven through the plunger 8 so that the tapped hole 13 is substantially central of the plunger, the

prongs 12 being substantially the same length as the depth of the plunger. The free endsflof the prongs 12 are then bent in toward'each other, as illustrated by 12,

Figure 10, whereby the arms 12 are securely clinched within the plunger body 8.

It is evident from the accompanying a frictional surface 6 and said head freed from thebarrel 1. This resultis plainly shown in Figure 1! Then the plunger rod can be pulled upwardly to the position shown in Figure 2, the barrel 1 being empty, however, when, bya further turning of the rod 5 through the medium of the cap 6, the threaded portion 7' of the rod can be caused to engage the tapped hole 13. Then the plungerrod 5 and plunger 8 can be pushed inwardly into the position shown in Figure 1. Then by'pulling the plunger outwardly, the pen will'be filled with ink, as plainly shown in F igure' 2. Turning thecplunger rod 5 will then disengage thethreaded portion 7 thereof from the threaded hole 13 so that the plunger rod can be pushed inwardly.

plunger at a very nominal cost. The member 8 is made of fiber, orany other suitable coinpressible material. The member 11 is very economically produced, economically assembled in the member 8 and forms a very ef:

' fective strengthening or reinforcing member therefor. Also, I wish particularly topoint out that the member 6 forms a very effective operating member for the plunger'rod and also serves as an effective closure for the barrel.

What I claim. is: I

A fountain pen comprising a hollow body forming an ink reservoir; a reciprocable plunger therein formed of compressible material; a metal reinforcement for said material having a central body member formed with a tapped hole and a plurality of arms forming prongs-driven into said material; and a plunger rod formed with a threaded portion adapted to co-operate with said tapped hole. 9

Signed by me this 13th day of July,1921.

LUIGI TADDEO. 

